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Finding the Fourth Proportional to 60,446.44, 90,617.82 and 20,978.92

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Solution

The fourth proportional to 60,446.44, 90,617.82 and 20,978.92 is: 31,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,446.44 : 90,617.82 = 20,978.92 : x
  2. Step 2: Convert to fraction form
    60,446.44/90,617.82 = 20,978.92/x
  3. Step 3: Cross multiply
    60,446.44x = 90,617.82 × 20,978.92
  4. Step 4: Simplify right side
    60,446.44x = 1,901,063,996.35
  5. Step 5: Solve for x
    x = 1,901,063,996.35/60,446.44
  6. Step 6: Final answer
    x = 31,450.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.